The consumer should always err on the side of caution when purchasing a new product. The proper way to go about purchasing something is to do some preliminary research before actually buying a product. For example, if you are interested in buying a water filtration system with water filters, then you should research to find out which water filtration system companies are reputable. In the world of today, many companies are just out to capitalize on a product and will compromise quality for a sale. The makers of PUR water filtration products have done their research on the effectiveness of their products and have every right to make the claims that they do. You can trust PUR.